Sterically hindered amine stabilizer

ABSTRACT

The present invention relates to oxygen-substituted sterically hindered amines of the formulae I or II: (II), wherein, for example, F 2 , R 3 , R 5 , R 6 , R 8 , R 9 , R 11 , R 12 , R 13 , R 14  are n-butyl; Z 1  to Z 10  are propoxy and R 1 , R 4 , R 7 , R 10 , R 13  are 2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl. Compositions comprising compounds of formulae I or II and an organic material, which is susceptible to oxidative, thermal or light-induced degradation, are further disclosed. Optionally, further additives are contained.

Sterically hindered amines are known to be efficient stabilizers fororganic materials against the harmful effect of light andheat—especially for synthetic polymers like polyolefins. For example,agricultural films produced from polyolefins are stabilized bysterically hindered amine stabilizers, since light transmission has gota major impact on the growth of crops and a sustainable lighttransmission depends on the long-term stability of the film. Thesterically hindered nitrogen atom of the sterically hindered amine caneither possess a hydrogen atom, i.e. a secondary amine, or can besubstituted further for example by an oxygen atom like in the case of analkylether. The basicity of the sterically hinderd amine is reduced incase of substitution of its nitrogen atom with an oxygen atom. Theseoxygen-substituted sterically hindered amines proved to be especiallyuseful in applications where exposure to acids takes place. The acids ortraces of acid might be present from the start—e.g. an acid-curedcoating resin—or be released over time. The latter one can be an acidrelease from another component of the organic material, for examplespecific halogen-containing flame retardants, or the immission of tracesof acid from the external environment, for example by exposure tovapours of specific crop protection agents like vapam.

Many different sterically hindered amine stabilizers—with or withoutoxygen-substitution—have been disclosed in prior art.

In U.S. Pat. No. 5,096,950, oxygen-substituted sterically hindered aminestabilizers useful as stabilizers for polyolefin compositions aredisclosed.

In U.S. Pat. No. 5,844,026, oxygen-substituted sterically hindered aminestabilizers useful as stabilizers for polyolefin compositions aredisclosed.

In U.S. Pat. No. 6,117,995, oxygen-substituted sterically hindered aminestabilizers useful as stabilizers for organic material are disclosed.

In EP-A-1840127, sterically hindered amine stabilizers useful asstabilizers for organic material are disclosed.

However, there is still a need for further oxygen-substituted stericallyhindered amine stabilizers, which provide a further improvement of thelong-term stabilization of organic materials.

Another aspect is the replacement of polymeric oxygen-substitutedsterically hindered amine stabilizers, which are by definitionmulti-component mixtures, by more well-defined, in principle singlemolecule type of oxygen-substituted sterically hindered aminestabilizers. This is desirable in regard to a more precise and bettermanageable synthesis and also a more straightforward analyticalcharacterization afterwards. Furthermore, better fine-tuning ofphysical-chemical properties is possible for a more single-molecule typeof material.

It has now been found that a specific class of oxygen-substitutedsterically hindered amine stabilizer is fulfilling the above statedrequirements.

An embodiment of this invention is a compound of formula I

or formula II

whereinR₁ is a group of formula III

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;R₄ is a group of formula IV

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₈ alkyl,C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₈ alkyloxy, C₃-C₁₈ alkenyloxy, C₃-C₁₈ alkynyloxy, C₆-C₁₀ aryloxy,C₇-C₉ aralkyloxy or C₇-C₂₀ aralkyloxy substituted by C₁-C₄ alkyl orC₆-C₁₀ aryl;X₁ is C₂-C₁₂ alkylene or C₃-C₁₂ alkylene substituted by hydroxyl; orR₇ is a group of formula V

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;R₁₀ is a group of formula VI

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;R₁₃ is a group of formula VII

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl,C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl orC₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₈ alkyloxy, C₃-C₁₈ alkenyloxy, C₃-C₁₂ cycloalkyloxy,C₅-C₈ cycloalkenyloxy, C₆-C₁₀ bicycloalkyloxy, C₃-C₁₈ alkynyloxy,C₆-C₁₀aryloxy, C₇-C₉ aralkyloxy or C₇-C₂₀ aralkyloxy substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;X₂, X₃ and X₄ are each independently from each other C₂-C₁₂ alkylene orC₃-C₁₂ alkylene substituted by hydroxyl.

C₁-C₁₈ alkyl comprises linear and branched alkyl. Examples are methyl,ethyl, n-propyl, 1-methylethyl, n-butyl, 2-methylpropyl, 1-methylpropyl,tert-butyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl,1,1-dimethylpropyl, 1-ethylpropyl, tert-butylmethyl, hexyl,1-methylpentyl, heptyl, isoheptyl, 2-ethylpentyl, 1-propylbutyl, octyl,isooctyl, 1-ethylhexyl, 2-ethylhexyl, 1,1,3,3-tetramethylbutyl,2,4,4-trimethylpentyl, nonyl, isononyl, neononyl, undecyl, lauryl,tridecyl, tetradecyl, pentadecyl, hexadecyl and octadecyl.

Preferred is C₁-C₁₂ alkyl, especially C₁-C₈ alkyl, in particular C₁-C₄alkyl. A preferred example is butyl, especially n-butyl.

C₃-C₁₈ alkenyl comprises linear and branched alkenyl including possibleE- and Z-isomers. Examples are allyl, 3-methyl-but-2-enyl, dec-9-enyl,hexadec-9-enyl, octadec-9-enyl. Preferred is C₃-C₁₂ alkenyl. A preferredexample is allyl.

C₃-C₁₂ cycloalkyl comprises unsubstituted and substituted, i.e. by oneor more C₁-C₄ alkyl, cycloalkyl. Examples are cyclopropyl,3-methylcyclopropyl, 2,2,3,3-tetramethylcyclopropyl, cyclobutyl,cyclopentyl, cyclohexyl, 1-methylcyclohexyl, 2-methylcyclohexyl,3-methylcyclohexyl, 4-methylcyclohexyl, 4-tert-butylcyclohexyl andcycloheptyl.

Preferred are C₃-C₆ cycloalkyl, particularly C₅-C₆ cycloalkyl. Apreferred example is cyclohexyl.

C₅-C₈ cycloalkenyl comprises unsubstituted and substituted, i.e. by oneor more C₁-C₄ alkyl, cycloalkenyl. Examples are cyclopentenyl,cyclohexenyl, cycloheptenyl and cyclooctenyl.

C₆-C₁₀ bicycloalkyl comprises unsubstituted and substituted, i.e. by oneor more C₁-C₄ alkyl, bicycloalkyl. Examples are bicyclo[2.2.1]heptyl,bicyclo[3.1.1]heptyl, 3-methyl-bicyclo[3.1.1]-heptyl and1,7,7-trimethylbicyclo[2.2.1]heptyl.

C₃-C₁₈ alkynyl are exemplified by propargyl, but-3-inyl, hex-5-inyl,oct-7-inyl, dec-9-inyl, dodec-11-inyl, tetradec-13-inyl, hexadec-15-inyland octadec-17-inyl.

Preferred is C₃-C₁₂ alkinyl. A preferred example is propargyl.

C₆-C₁₀ aryl comprises unsubstituted and substituted, i.e. by one or moreC₁-C₄ alkyl, aryl. Examples are phenyl, 3-methylphenyl, 4-methylphenyl,dimethylphenyl, 3-ethylphenyl, 4-ethylphenyl, iso-propylphenyl,tert-butylphenyl, naphtyl and biphenyl.

Preferred is unsubstituted or substituted phenyl, in particularunsubstituted and para-substituted phenyl.

C₇-C₉ aralkyl is exemplified by benzyl, phenylethyl and phenylpropyl. Apreferred example is benzyl.

C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl is exemplifiedby α-methylbenzyl, 3-methylbenzyl, 4-methylbenzyl, α,α-dimethylbenzyl,α-ethylbenzyl, 4-ethylbenzyl, 4-propylbenzyl, 4-iso-propyl-benzyl,4-tert-butylbenzyl and diphenylmethyl.

C₁-C₁₈ alkyloxy comprises unsubstituted and substituted, i.e. by C₁-C₉alkyl, alkyloxy. Examples are methyloxy, ethyloxy, propyloxy (=propoxy),butyloxy, hexyloxy, octyloxy and undecyloxy.

Preferred is C₁-C₁₂ alkyloxy. Preferred examples are methyloxy,ethyloxy, propyloxy, octyloxy and undecyloxy. Especially preferred ispropyloxy.

Preferred is C₁-C₁₈ alkyloxy, wherein in case of C₃-C₁₈ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched.Examples are methyloxy, ethyloxy, n-propyloxy, n-butyloxy, n-pentyloxy,3-methylbutyloxy, n-hexyloxy, 3-methylpentyloxy, 4-methylpentyloxy,n-heptyloxy, 3-methylhexyloxy, 4-methylhexyloxy, 5-methylhexyloxy,3-ethylpentyloxy, 3,4-dimethylpentyloxy, n-octyloxy, 3-methylheptyloxy,4-methylheptyloxy, 5-methylheptyloxy, 6-methylheptyloxy,3-ethylhexyloxy, 4-ethylhexyloxy, 3,4-dimethylhexyloxy,3,5-dimethylhexyloxy, n-nonyloxy, 3-methyloctyloxy, 4-methyloctyloxy,5-methyloctyloxy, 6-methyloctyloxy, 7-methyloctyloxy, 3-ethylheptyloxy,4-ethylheptyloxy, 5-ethylheptyloxy, 3,4-dimethylheptyloxy,3,5-dimethylheptyloxy, 3,6-dimethylheptyloxy, 4,5-dimethylheptyloxy,4,6-dimethylheptyloxy, 5,6-dimethylheptyloxy, n-undecyloxy, n-lauryloxy,n-tridecyloxy, n-tetradecyloxy, n-pentadecyloxy, n-hexadecyloxy andn-octadecyloxy.

Preferred is C₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched.

Preferred is C₁-C₈ alkyloxy, wherein in case of C₃-C₈ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched.

Preferred is linear C₁-C₁₂ alkyloxy. Examples are methyloxy, ethyloxy,n-propyloxy, n-butyloxy, n-pentyloxy, n-hexyloxy, n-heptyloxy,n-octyloxy, n-nonyloxy, n-undecyloxy and n-lauryloxy.

Especially preferred are methyloxy, ethyloxy and n-propyloxy.

C₃-C₁₈ alkenyloxy comprises unsubstituted and substituted, i.e. by C₁-C₉alkyl, C₃-C₁₈ alkenyloxy. Examples are prop-2-enyloxy, prop-1-enyloxy,but-2-enyloxy and 3-methyl-but-2-enyl.

Preferred is C₃-C₁₂ alkenyloxy. A preferred example is prop-2-enyloxy.

C₃-C₁₂ cycloalkyloxy is exemplified by cyclopentyloxy, cyclohexyloxy,cycloheptyloxy and cyclooctyloxy.

Preferred is C₅-C₈ cycloalkyloxy. A preferred example is cyclohexyloxy.

C₅-C₈ cycloalkenyloxy is exemplified by cyclopentenyloxy,cyclohexenyloxy, cycloheptenyloxy and cylcooctenyloxy.

Preferred is C₅-C₇ cycloalkenyloxy. A preferred example iscyclohexenyloxy.

C₆-C₁₀ bicycloalkyloxy is exemplified by bicyclo[2.2.1]heptyloxy,bicyclo[3.1.1]heptyloxy, 3-methyl-bicyclo[3.1.1]heptyloxy and1,7,7-trimethylbicyclo[2.2.1]heptyloxy.

C₃-C₁₈ alkynyloxy is exemplified by propargyloxy.

C₆-C₁₀ aryloxy is exemplified by phenyloxy, napthyloxy and biphenyloxy.

C₇-C₉ aralkyloxy is exemplified by benzyloxy, 2-phenylethyl and3-phenylpropyl. A preferred example is benzyloxy.

C₇-C₂₀ aralkyloxy substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl isexemplified by α-methylbenzyloxy, 3-methylbenzyloxy, 4-methylbenzyloxy,α,α-dimethylbenzyloxy, α-ethylbenzyloxy, 4-ethylbenzyloxy,4-propylbenzyloxy, 4-iso-propyl-benzyloxy, 4-tert-butylbenzyloxy anddiphenylmethyloxy.

C₂-C₁₂ alkylene comprises unsubstituted and substituted, i.e. by one ormore C₁-C₄ alkyl, alkylene. Examples are ethylene, propylene,1-methylethylene, butylene, pentylene, 2-methylbutylene, hexamethyleneand octamethylene.

Preferred are C₂-C₈ alkylene, in particular C₂-C₆ alkylene. Preferredexamples are hexamethylene, propylene and ethylene.

C₃-C₁₂ alkylene substituted by hydroxyl comprises no further substitutedand further substituted, i.e. by one or more C₁-C₄ alkyl, alkylenesubstituted by hydroxyl. Examples are 2-hydroxypropylene,2-hydroxy-butylene, 2,3-dihydroxybutylene, 2,5-hexamethylene and2-hydroxy-2-methylpropylene.

A preferred example is 2-hydroxypropylene.

Preferred is a compound of formula I.

Preferred is a compound of formula II.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₄ is a group of formula IV, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl,C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₂ alkyloxy, C₃-C₁₂ alkenyloxy or benzyloxy;

X₁ is C₂-C₈ alkylene; or

R₇ is a group of formula V, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₁₀ is a group of formula VI, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₁₃ is a group of formula VII, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl, C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl orbenzyl;

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₂ alkyloxy, C₃-C₁₂ alkenyloxy, C₅-C₈ cycloalkyloxy,C₅-C₇ cycloalkenyloxy, benzyloxy;

X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.

Especially preferred is a compound of formula I or formula II, wherein

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl;or

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl.

In particular, a compound of formula I or formula II is preferred,wherein

R₁ is a group of formula III and R₄ is a group of formula IV; or

R₇ is a group of formula V, R₁₀ is a group of formula VI and R₁₃ is agroup of formula VII.

Furthermore preferred is a compound of formula I or formula II, wherein

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each othermethyloxy, ethyloxy, propyloxy, octyloxy, undecyloxy or prop-2-enyloxy;or

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are independently from eachother methyloxy, ethyloxy, propyloxy, octyloxy, undecyloxy,cyclohexyloxy or prop-2-enyloxy.

Preferred is also a compound of formula I or II, wherein

R₁ and R₄ are each independently from each other hydrogen, C₁-C₁₂ alkylor C₅-C₈ cycloalkyl; or

R₇, R₁₀ and R₁₃ are each independently from each other hydrogen, C₁-C₁₂alkyl or C₅-C₈ cycloalkyl.

Preference is given to a compound of formula I or formula II, wherein

X₁ is C₂-C₆ alkylene; or

X₂, X₃ and X₄ are C₂-C₆ alkylene.

In particular desirable is a compound of formula I or formula II,wherein

X₁ is hexamethylene; or

X₂, X₃ and X₄ are ethylene.

Preferred is also a compound of formula I or formula II, wherein

R₂, R₃, R₅ and R₆ are butyl; or

R₈, R₉, R₁₁, R₁₂, R₁₃ and R₁₅ are butyl.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III or hydrogen;

R₄ is a group of formula IV or hydrogen;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₂ alkyloxy;

X₁ is C₂-C₈ alkylene; or

R₇ is a group of formula V or hydrogen;

R₁₀ is a group of formula VI or hydrogen;

R₁₃ is a group of formula VII or hydrogen;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl;

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₂ alkyloxy;

X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.

Very preferred is also a compound of formula I or formula II, wherein

R₁ is a group of formula III and R₄ is a group of formula IV,

R₂, R₃, R₅ and R₆ are butyl,

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are methyloxy, ethyloxy, propyloxy, octyloxyor undecyloxy,

X₁ is hexamethylene; or

R₇ is a group of formula V, R₁₀ is a group of formula VI and R₁₃ is agroup of formula VII,

R₈, R₉, R₁₁, R₁₂, R₁₃ and R₁₅ are butyl,

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are methyloxy, ethyloxy,propyloxy, octyloxy, undecyloxy or cyclohexyloxy,

X₂, X₃ and X₄ are ethylene.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III, hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl,C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀ aralkyl substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;

R₄ is a group of formula IV, hydrogen, C₁-C₁₀ alkyl, C₃-C₁₈ alkenyl,C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀ aralkyl substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₈ alkyl,C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₀ alkyloxy, wherein in case of C₃-C₁₀ alkyloxy both carbon atoms inα- and β-position next to the oxygen are not branched;

X₁ is C₂-C₁₂ alkylene or C₃-C₁₂ alkylene substituted by hydroxyl; or

R₇ is a group of formula V, hydrogen, C₁-C₁₀ alkyl, C₃-C₁₀ alkenyl,C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈alkynyl, C₆-C₁₀aryl, C₇-C₉ aralkyl or C₇-C₂₀ aralkyl substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;

R₁₀ is a group of formula VI, hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl,C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀ aralkyl substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;

R₁₃ is a group of formula VII, hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl,C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀ aralkyl substituted byC₁-C₄ alkyl or C₆-C₁₀ aryl;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl,C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl orC₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl;Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₈ alkyloxy, wherein in case of C₃-C₁₈ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched;X₂, X₃ and X₄ are each independently from each other C₂-C₁₂ alkylene orC₃-C₁₂ alkylene substituted by hydroxyl.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₄ is a group of formula IV, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl,C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy both carbon atoms inα- and β-position next to the oxygen are not branched;

X₁ is C₂-C₈ alkylene; or

R₇ is a group of formula V, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₁₀ is a group of formula VI, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₁₃ is a group of formula VII, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl,C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl, C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl orbenzyl;

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched;

X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III or hydrogen;

R₄ is a group of formula IV or hydrogen;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherC₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy both carbon atoms inα- and β-position next to the oxygen are not branched;

X₁ is C₂-C₈ alkylene; or

R₇ is a group of formula V or hydrogen;

R₁₀ is a group of formula VI or hydrogen;

R₁₃ is a group of formula VII or hydrogen;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl;

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other C₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched;

X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III or hydrogen;

R₄ is a group of formula IV or hydrogen;

R₂, R₃, R₅ and R₆ are each independently from each other C₁-C₁₂ alkyl;

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are each independently from each otherlinear C₁-C₁₂ alkyloxy;

X₁ is C₂-C₈ alkylene; or

R₇ is a group of formula V or hydrogen;

R₁₀ is a group of formula VI or hydrogen;

R₁₃ is a group of formula VII or hydrogen;

R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each otherC₁-C₁₂ alkyl;

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently fromeach other linear C₁-C₁₂ alkyloxy;

X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.

Preferred is a compound of formula I or formula II, wherein

R₁ is a group of formula III and R₄ is a group of formula IV,

R₂, R₃, R₅ and R₆ are butyl,

Z₁, Z₂, Z₃, Z₄, Z₁₁ and Z₁₂ are methyloxy, ethyloxy, n-propyloxy orn-undecyloxy,

X₁ is hexamethylene; or

R₇ is a group of formula V, R₁₀ is a group of formula VI and R₁₃ is agroup of formula VII,

R₈, R₉, R₁₁, R₁₂, R₁₃ and R₁₅ are butyl,

Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are methyloxy, ethyloxy,n-propyloxy or n-undecyloxy,

X₂, X₃ and X₄ are ethylene.

Preferred is the compound P-201, P-202, P-203 or P-204. The compoundsare depicted below.

A further embodiment of this invention is a composition comprising

-   -   a) an organic material which is susceptible to oxidative,        thermal or light-induced degradation; and    -   b) at least one compound of the formula I or formula II.

For example, an organic material comprises natural, semi-natural andsynthetic polymers.

Examples for polymers are:

1. Polymers of monoolefins and diolefins, for example polypropylene,polyisobutylene, poly-but-1-ene, poly-4-methylpent-1-ene,polyvinylcyclohexane, polyisoprene or polybutadiene, as well as polymersof cycloolefins, for instance of cyclopentene or norbornene,polyethylene (which optionally can be crosslinked), for example highdensity polyethylene (HDPE), high density and high molecular weightpolyethylene (HDPE-HMW), high density and ultrahigh molecular weightpolyethylene (HDPE-UHMW), medium density polyethylene (MDPE), lowdensity polyethylene (LDPE), linear low density polyethylene (LLDPE),(VLDPE) and (ULDPE).

Polyolefins, i.e. the polymers of monoolefins exemplified in thepreceding paragraph, preferably polyethylene and polypropylene, can beprepared by different, and especially by the following, methods:

-   -   a) radical polymerisation (normally under high pressure and at        elevated temperature).    -   b) catalytic polymerisation using a catalyst that normally        contains one or more than one metal of groups IVb, Vb, VIb or        VIII of the Periodic Table. These metals usually have one or        more than one ligand, typically oxides, halides, alcoholates,        esters, ethers, amines, alkyls, alkenyls and/or aryls that may        be either π- or σ-coordinated. These metal complexes may be in        the free form or fixed on substrates, typically on activated        magnesium chloride, titanium(III) chloride, alumina or silicon        oxide. These catalysts may be soluble or insoluble in the        polymerisation medium. The catalysts can be used by themselves        in the polymerisation or further activators may be used,        typically metal alkyls, metal hydrides, metal alkyl halides,        metal alkyl oxides or metal alkyloxanes, said metals being        elements of groups Ia, IIa and/or IIIa of the Periodic Table.        The activators may be modified conveniently with further ester,        ether, amine or silyl ether groups. These catalyst systems are        usually termed Phillips, Standard Oil Indiana, Ziegler (-Natta),        TNZ (DuPont), metallocene or single site catalysts (SSC).

2. Mixtures of the polymers mentioned under 1., for example mixtures ofpolypropylene with polyisobutylene, polypropylene with polyethylene (forexample PP/HDPE, PP/LDPE) and mixtures of different types ofpolyethylene (for example LDPE/HDPE).

3. Copolymers of monoolefins and diolefins with each other or with othervinyl monomers, for example ethylene/propylene copolymers, linear lowdensity polyethylene (LLDPE) and mixtures thereof with low densitypolyethylene (LDPE), propylene/but-1-ene copolymers,propylene/isobutylene copolymers, ethylene/but-1-ene copolymers,ethylene/hexene copolymers, ethylene/methylpentene copolymers,ethylene/heptene copolymers, ethylene/octene copolymers,ethylene/vinylcyclohexane copolymers, ethylene/cycloolefin copolymers(e.g. ethylene/norbornene like COC), ethylene/1-olefins copolymers,where the 1-olefin is generated in-situ; propylene/butadiene copolymers,isobutylene/isoprene copolymers, ethylene/vinylcyclohexene copolymers,ethylene/alkyl acrylate copolymers, ethylene/alkyl methacrylatecopolymers, ethylene/vinyl acetate copolymers or ethylene/acrylic acidcopolymers and their salts (ionomers) as well as terpolymers of ethylenewith propylene and a diene such as hexadiene, dicyclopentadiene orethylidene-norbornene; and mixtures of such copolymers with one anotherand with polymers mentioned in 1. above, for examplepolypropylene/ethyl-lene-propylene copolymers, LDPE/ethylene-vinylacetate copolymers (EVA), LDPE/ethylene-acrylic acid copolymers (EAA),LLDPE/EVA, LLDPE/EAA and alternating or random polyalkylene/carbonmonoxide copolymers and mixtures thereof with other polymers, forexample polyamides.

4. Hydrocarbon resins (for example C₅-C₉) including hydrogenatedmodifications thereof (e.g. tackifiers) and mixtures of polyalkylenesand starch.

Homopolymers and copolymers from 1.-4. may have any stereostructureincluding syndiotactic, isotactic, hemi-isotactic or atactic; whereatactic polymers are preferred. Stereoblock polymers are also included.

5. Polystyrene, poly(p-methylstyrene), poly(α-methylstyrene).

6. Aromatic homopolymers and copolymers derived from vinyl aromaticmonomers including styrene, α-methylstyrene, all isomers of vinyltoluene, especially p-vinyltoluene, all isomers of ethyl styrene, propylstyrene, vinyl biphenyl, vinyl naphthalene, and vinyl anthracene, andmixtures thereof. Homopolymers and copolymers may have anystereostructure including syndiotactic, isotactic, hemi-isotactic oratactic; where atactic polymers are preferred. Stepreoblock polymers arealso included.

6a. Copolymers including aforementioned vinyl aromatic monomers andcomonomers selected from ethylene, propylene, dienes, nitriles, acids,maleic anhydrides, maleimides, vinyl acetate and vinyl chloride oracrylic derivatives and mixtures thereof, for example styrene/butadiene,styrene/acrylonitrile, styrene/ethylene (interpolymers), styrene/alkylmethacrylate, styrene/butadiene/alkyl acrylate, styrene/butadiene/alkylmethacrylate, styrene/maleic anhydride, styrene/acrylonitrile/methylacrylate; mixtures of high impact strength of styrene copolymers andanother polymer, for example a polyacrylate, a diene polymer or anethylene/propylene/diene terpolymer; and block copolymers of styrenesuch as styrene/butadiene/styrene, styrene/isoprene/styrene,styrene/ethylene/butylene/styrene or styrene/ethylene/propylene/styrene.

6b. Hydrogenated aromatic polymers derived from hydrogenation ofpolymers mentioned under 6.), especially includingpolycyclohexylethylene (PCHE) prepared by hydrogenating atacticpolystyrene, often referred to as polyvinylcyclohexane (PVCH).

6c. Hydrogenated aromatic polymers derived from hydrogenation ofpolymers mentioned under 6a.

Homopolymers and copolymers may have any stereostructure includingsyndiotactic, isotactic, hemi-isotactic or atactic; where atacticpolymers are preferred. Stereoblock polymers are also included.

7. Graft copolymers of vinyl aromatic monomers such as styrene orα-methylstyrene, for example styrene on polybutadiene, styrene onpolybutadiene-styrene or polybutadiene-acrylonitrile copolymers; styreneand acrylonitrile (or methacrylonitrile) on polybutadiene; styrene,acrylonitrile and methyl methacrylate on polybutadiene; styrene andmaleic anhydride on polybutadiene; styrene, acrylonitrile and maleicanhydride or maleimide on polybutadiene; styrene and maleimide onpolybutadiene; styrene and alkyl acrylates or methacrylates onpolybutadiene; styrene and acrylonitrile on ethylene/propylene/dieneterpolymers; styrene and acrylonitrile on polyalkyl acrylates orpolyalkyl methacrylates, styrene and acrylonitrile on acrylate/butadienecopolymers, as well as mixtures thereof with the copolymers listed under6), for example the copolymer mixtures known as ABS, MBS, ASA or AESpolymers.

8. Halogen-containing polymers such as polychloroprene, chlorinatedrubbers, chlorinated and brominated copolymer of isobutylene-isoprene(halobutyl rubber), chlorinated or sulfo-chlorinated polyethylene,copolymers of ethylene and chlorinated ethylene, epichlorohydrin homo-and copolymers, especially polymers of halogen-containing vinylcompounds, for example polyvinyl chloride, polyvinylidene chloride,polyvinyl fluoride, polyvinylidene fluoride, as well as copolymersthereof such as vinyl chloride/vinylidene chloride, vinyl chloride/vinylacetate or vinylidene chloride/vinyl acetate copolymers.

9. Polymers derived from α,β-unsaturated acids and derivatives thereofsuch as polyacrylates and polymethacrylates; polymethyl methacrylates,polyacrylamides and polyacrylonitriles, impact-modified with butylacrylate.

10. Copolymers of the monomers mentioned under 9. with each other orwith other unsaturated monomers, for example acrylonitrile/butadienecopolymers, acrylonitrile/alkyl acrylate copolymers,acrylonitrile/alkoxyalkyl acrylate or acrylonitrile/vinyl halidecopolymers or acrylonitrile/alkyl methacrylate/butadiene terpolymers.

11. Polymers derived from unsaturated alcohols and amines or the acylderivatives or acetals thereof, for example polyvinyl alcohol, polyvinylacetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate,polyvinyl butyral, polyallyl phthalate or polyallyl melamine; as well astheir copolymers with olefins mentioned in 1. above.

12. Homopolymers and copolymers of cyclic ethers such as polyalkyleneglycols, polyethyllene oxide, polypropylene oxide or copolymers thereofwith bisglycidyl ethers.

13. Polyacetals such as polyoxymethylene and those polyoxymethyleneswhich contain ethylene oxide as a comonomer; polyacetals modified withthermoplastic polyurethanes, acrylates or MBS.

14. Polyphenylene oxides and sulfides, and mixtures of polyphenyleneoxides with styrene polymers or polyamides.

15. Polyurethanes derived from hydroxyl-terminated polyethers,polyesters or polybutadienes on the one hand and aliphatic or aromaticpolyisocyanates on the other, as well as precursors thereof.

16. Polyamides and copolyamides derived from diamines and dicarboxylicacids and/or from aminocarboxylic acids or the corresponding lactams,for example polyamide 4, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12,4/6, 12/12, polyamide 11, polyamide 12, aromatic polyamides startingfrom m-xylene diamine and adipic acid; polyamides prepared fromhexamethylenediamine and isophthalic or/and terephthalic acid and withor without an elastomer as modifier, for examplepoly-2,4,4,-trimethylhexamethylene terephthalamide or poly-m-phenyleneisophthalamide; and also block copolymers of the aforementionedpolyamides with polyolefins, olefin copolymers, ionomers or chemicallybonded or grafted elastomers; or with polyethers, e.g. with polyethyleneglycol, polypropylene glycol or polytetramethylene glycol; as well aspolyamides or copolyamides modified with EPDM or ABS; and polyamidescondensed during processing (RIM polyamide systems).

17. Polyureas, polyimides, polyamide-imides, polyetherimides,polyesterimides, polyhydantoins and polybenzimidazoles.

18. Polyesters derived from dicarboxylic acids and diols and/or fromhydroxycarboxylic acids or the corresponding lactones or lactides, forexample polyethylene terephthalate, polybutylene terephthalate,poly-1,4-dimethylolcyclohexane terephthalate, polyalkylene naphthalateand polyhydroxybenzoates as well as copolyether esters derived fromhydroxyl-terminated polyethers, and also polyesters modified withpolycarbonates or MBS. Copolyesters may comprise, for example—but arenot limited to—polybutylenesuccinate/terephtalate,polybutyleneadipate/terephthalate,polytetramethyleneadipate/terephthalate, polybutylensuccinate/-adipate,polybutylensuccinate/carbonate, poly-3-hydroxybutyrate/octanoatecopolymer, poly-3-hydroxybutyrate/hexanoate/decanoate terpolymer.Furthermore, aliphatic polyesters may comprise, for example—but are notlimited to—the class of poly(hydroxyalkanoates), in particular,poly(propiolactone), poly(butyrolactone), poly(pivalolactone),poly(valerolactone) and poly(caprolactone), polyethylenesuccinate,polypropylenesuccinate, polybutylenesuccinate,polyhexamethylenesuccinate, polyethyleneadipate, polypropyleneadipate,polybutyleneadipate, polyhexamethyleneadipate, polyethyleneoxalate,polypropyleneoxalate, polybutyleneoxalate, polyhexamethyleneoxalate,polyethylenesebacate, polypropylenesebacate, polybutylenesebacate andpolylactic acid (PLA) as well as corresponding polyesters modified withpolycarbonates or MBS. The term ‘polylactic acid (PLA)’ designates ahomo-polymer of preferably poly-L-lactide and any of its blends oralloys with other polymers; a co-polymer of lactic acid or lactide withother monomers, such as hydroxy-carboxylic acids, like for exampleglycolic acid, 3-hydroxy-butyric acid, 4-hydroxy-butyric acid,4-hydroxy-valeric acid, 5-hydrooxy-valeric acid, 6-hydroxy-caproic acidand cyclic forms thereof; the terms ‘lactic acid’ or ‘lactide’ includeL-lactic acid, D-lactic acid, mixtures and dimers thereof, i.e.L-lactide, D-lactide, meso-lacide and any mixtures thereof.

19. Polycarbonates and polyester carbonates.

20. Polyketones.

21. Polysulfones, polyether sulfones and polyether ketones.

22. Crosslinked polymers derived from aldehydes on the one hand andphenols, ureas and melamines on the other hand, such asphenol/formaldehyde resins, urea/formaldehyde resins andmelamine/formaldehyde resins.

23. Drying and non-drying alkyd resins.

24. Unsaturated polyester resins derived from copolyesters of saturatedand unsaturated dicarboxylic acids with polyhydric alcohols and vinylcompounds as crosslinking agents, and also halogen-containingmodifications thereof of low flammability.

25. Crosslinkable acrylic resins derived from substituted acrylates, forexample epoxy acrylates, urethane acrylates or polyester acrylates.

26. Alkyd resins, polyester resins and acrylate resins crosslinked withmelamine resins, urea resins, isocyanates, isocyanurates,polyisocyanates or epoxy resins.

27. Crosslinked epoxy resins derived from aliphatic, cycloaliphatic,heterocyclic or aromatic glycidyl compounds, e.g. products of diglycidylethers of bisphenol A and bisphenol F, which are crosslinked withcustomary hardeners such as anhydrides or amines, with or withoutaccelerators.

28. Natural polymers such as cellulose, rubber, gelatin and chemicallymodified homologous derivatives thereof, for example cellulose acetates,cellulose propionates and cellulose butyrates, or the cellulose etherssuch as methyl cellulose; as well as rosins and their derivatives.

29. Blends of the aforementioned polymers (polyblends), for examplePP/EPDM, Polyamide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS,PBTP/ABS, PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR,PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6 andcopolymers, PA/HDPE, PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC.

A coating binder is for example an acid catalyzed two component systemor an air drying system.

A preferred polymer for component a) is a thermoplastic polymer or acoating binder.

In particular, component a) is a thermoplastic polymer. Of highrelevance is the group of thermoplastic polyolefins, especially homo- orcopolymers containing polymerized propylene or ethylene. Especiallypreferred is polypropylene or polyethylene, very particularpolyethylene.

Preferred as component a) are also biodegradable polymers of eithernatural or synthetic origin.

Examples are polyethylensuccinate (Lunare SE (RTM, Nihon Shokubai)),polybutylensuccinate (Bionolle 1000 (RTM, Showa Highpolymer)),polybutylensuccinate/adipate (Bionolle 3000 (RTM, Showa Highpolymer)),polybutylensuccinate/carbonate (lupec (RTM, Mitsubishi Gas Chemicals)),polybutylensuccinate/terephtalate (Biomax (RTM, Dupont), Ecoflex (RTM,BASF), EasterBio (RTM, Eastman Chemicals)), polycaprolactone (CelGreenPH (RTM, Daicel Kagaku), Tone (RTM, UCC)), poly(hydroxyalkanoates)(Nodax (RTM, Procter and Gamble), from Metabolix),poly-3-hydroxybutyrate (Biogreen (RTM, Mitsubishi Gas Chemicals)),polylactic acid (NatureWorks (RTM, Cargill), LACEA (RTM, MitsuiChemicals), Lacty (RTM, Shimadzu Seisakusho)), polyester amides orblends of these materials with natural or modified starch,polysaccharides, lignin, wood flour, cellulose and chitin.

The employed amount of component b) in regard to component a) varieswith the particular organic material and the selected application.

In general, the component b) of the present invention is employed fromabout 0.01 to about 10% by weight of the component a).

An advantageous range is from 0.05 to 5%, in particular 0.05% to 3%.Especially preferred is 0.1% to 1%.

Another advantageous range is, in particular for improving flameretardancy, from 0.6% to 3%, especially from 0.7% to 1.5%.

The composition as described above comprising component a) and componentb) may contain further additives.

Examples of further additives are given below:

1. Antioxidants

1.1. Alkylated monophenols, for example2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol,2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol,2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol,2-(α-methylcyclohexyl)-4,6-dimethylphenol,2,6-di-octadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol,2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols which are linearor branched in the side chains, for example,2,6-di-nonyl-4-methylphenol,2,4-dimethyl-6-(1′-methylundec-1′-yl)phenol,2,4-dimethyl-6-(1′-methylheptadec-1′-yl)phenol,2,4-dimethyl-6-(1′-methyltridec-1-yl)phenol and mixtures thereof.

1.2. Alkylthiomethylphenols, for example2,4-dioctylthiomethyl-6-tert-butylphenol,2,4-dioctylthiomethyl-6-methylphenol,2,4-dioctylthiomethyl-6-ethylphenol,2,6-di-dodecylthiomethyl-4-nonylphenol.

1.3. Hydroquinones and alkylated hydroquinones, for example2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone,2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol,2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole,3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenylstearate, bis(3,5-di-tert-butyl-4-hydroxyphenyl) adipate.

1.4. Tocopherols, for example α-tocopherol, β-tocopherol, γ-tocopherol,δ-tocopherol and mixtures thereof (vitamin E).

1.5. Hydroxylated thiodiphenyl ethers, for example 2,2′-thiobis(6-tert-butyl-4-methylphenol), 2,2′-thiobis(4-octylphenol),4,4′-thiobis(6-tert-butyl-3-methylphenol),4,4′-thiobis(6-tert-butyl-2-methylphenol),4,4′-thiobis(3,6-di-sec-amylphenol),4,4′-bis(2,6-dimethyl-4-hydroxyphenyl)disulfide.

1.6. Alkylidenebisphenols, or example 2,2′-methylenebis(6-tert-butyl-4-methylphenol),2,2′-methylenebis(6-tert-butyl-4-ethylphenol),2,2′-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol],2,2′-methylenebis(4-methyl-6-cyclohexylphenol),2,2′-methylenebis(6-nonyl-4-methylphenol),2,2′-methylenebis(4,6-di-tert-butylphenol),2,2′-ethylidenebis(4,6-di-tert-butylphenol),2,2′-ethylidenebis(6-tert-butyl-4-isobutylphenol),2,2′-methylenebis[6-(α-methylbenzyl)-4-nonylphenol],2,2′-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol],4,4′-methyllenebis(2,6-di-tert-butylphenol),4,4′-methylenebis(6-tert-butyl-2-methylphenol),1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane,2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol,1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane,1,1-bis(5-tert-butyl-4-hydroxy-2-methyl-phenyl)-3-n-dodecylmercaptobutane,ethylene glycol bis[3,3-bis(3′-tert-butyl-4′-hydroxyphenyl)butyrate],bis(3-tert-butyl-4-hydroxy-5-methyl-phenyl)dicyclopentadiene,bis[2-(3′-tert-butyl-2′-hydroxy-5′-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate,1,1-bis-(3,5-dimethyl-2-hydroxyphenyl)butane,2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane,2,2-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane,1,1,5,5-tetra-(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane.

1.7. O-, N- and S-benzyl compounds, for example 3,5,3′,5′-tetra-tert-butyl-4,4′-dihydroxydibenzyl ether,octadecyl-4-hydroxy-3,5-di methyl benzylmercaptoacetate,tridecyl-4-hydroxy-3,5-di-tert-butylbenzylmercaptoacetate,tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine,bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate,bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide,isooctyl-3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate.

1.8. Hydroxybenzylated malonates, for exampledi-octadecyl-2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate,di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate,didodecylmercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate,bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.

1.9. Aromatic hydroxybenzyl compounds, for example1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene,1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethyl benzene,2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol.

1.10. Triazine compounds, for example2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine,2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine,2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine,2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine,1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate,1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate,2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine,1,3,5-tris(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)-hexahydro-1,3,5-triazine,1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate.

1.11. Benzylphosphonates, for exampledimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate,diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate,di-octadecyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate,di-octadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, thecalcium salt of the monoethyl ester of3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.

1.12. Acylaminophenols, for example 4-hydroxylauranilide,4-hydroxystearanilide, octylN-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.

1.13. Esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid withmono- or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol,i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol,1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylleneglycol, triethylene glycol, pentaerythritol,tris(hydroxyethyl)isocyanurate, N,N-bis(hydroxyethyl)oxamide,3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,trimethylolpropane,4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.14. Esters of β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acidwith mono- or polyhydric alcohols, for example with methanol, ethanol,n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol,ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethyleneglycol, diethylene glycol, triethylene glycol, pentaerythritol,tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide,3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,trimethylolpropane,4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane;3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane.

1.15. Esters of β-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid withmono- or polyhydric alcohols, for example with methanol, ethanol,octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol,1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethyleneglycol, triethylene glycol, pentaerythritol,tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide,3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,trimethylolpropane,4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.16. Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with mono-or polyhydric alcohols, for example with methanol, ethanol, octanol,octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol,1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethyleneglycol, triethylene glycol, pentaerythritol,tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethypoxamide,3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,trimethylolpropane,4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.17. Amides of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, forexampleN,N-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide,N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamide,N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyphydrazide,N,N′-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxamide(Naugard XL-1, (RTM, supplied by Uniroyal).

1.18. Ascorbic acid (Vitamin C)

1.19. Aminic antioxidants, for exampleN,N′-di-isopropyl-p-phenylenediamine,N,N-di-sec-butyl-p-phenylenediamine,N,N′-bis(1,4-dimethylpentyl)-p-phenylenediamine,N,N-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine,N,N′-bis(1-methylheptyl)-p-phenylenediamine,N,N′-dicyclohexyl-p-phenylenediamine, N,N′-diphenyl-p-phenylenediamine,N,N′-bis(2-naphthyl)-p-phenylenediamine,N-isopropyl-N′-phenyl-p-phenylenediamine,N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine,N-(1-methylheptyl)-N′-phenyl-p-phenylenediamine,N-cyclohexyl-N′-phenyl-p-phenylenediamine,4-(p-toluenesulfamoyl)diphenylamine,N,N′-dimethyl-N,N′-di-sec-butyl-p-phenylenediamine, diphenylamine,N-allyldiphenylamine, 4-isopropoxydiphenylamine,N-phenyl-1-naphthylamine, N-(4-tert-octylphenyl)-1-naphthylamine,N-phenyl-2-naphthylamine, octylated diphenylamine, for examplep,p′-di-tert-octyldiphenylamine, 4-n-butylaminophenol,4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol,4-octadecanoylaminophenol, bis(4-methoxyphenyl)amine,2,6-di-tert-butyl-4-dimethylaminomethylphenol,2,4′-diaminodiphenylmethane, 4,4′-diaminodiphenylmethane,N,N,N′,N′-tetramethyl-4,4′-diaminodiphenylmethane,1,2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(phenylamino)propane,(o-tolyl)biguanide, bis[4-(1′,3′-dimethylbutyl)phenyl]amine,tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- anddialkylated tert-butyl/tert-octyldiphenylamines, a mixture of mono- anddialkylated nonyldiphenylamines, a mixture of mono- and dialkylateddodecyldiphenylamines, a mixture of mono- and dialkylatedisopropyl/isohexyldiphenylamines, a mixture of mono- and dialkylatedtert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine,phenothiazine, a mixture of mono- and dialkylatedtert-butyl/tert-octyl-phenothiazines, a mixture of mono- and dialkylatedtert-octyl-phenothiazines, N-allylphenothiazine,N,N,N′,N′-tetraphenyl-1,4-diaminobut-2-ene.

2. UV absorbers and light stabilizers

2.1. 2-(2′-Hydroxyphenyl)benzotriazoles, for example2-(2′-hydroxy-5′-methylphenyl)-benzotriazole,2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)benzotriazole,2-(5′-tert-butyl-2′-hydroxyphenyl)benzotriazole,2-(2′-hydroxy-5′-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole,2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)-5-chloro-benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-methylphenyl)-5-chloro-benzotriazole,2-(3′-sec-butyl-5′-tert-butyl-2′-hydroxyphenyl)benzotriazole,2-(2′-hydroxy-4′-octyloxyphenyl)benzotriazole,2-(3′,5′-di-tert-amyl-2′-hydroxyphenyl)benzotriazole,2-(3′,5′-bis-(α,α-dimethylbenzyl)-2′-hydroxyphenyl)benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)-5-chloro-benzotriazole,2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)-carbonylethyl]-2′-hydroxyphenyl)-5-chloro-benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)-5-chloro-benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)benzotriazole,2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl)benzotriazole,2-(3′-dodecyl-2′-hydroxy-5′-methylphenyl)benzotriazole,2-(3′-tert-butyl-2′-hydroxy-5′-(2-iso-octyloxycarbonylethyl)phenylbenzotriazole,2,2′-methylene-bis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazole-2-ylphenol];the transesterification product of2-[3′-tert-butyl-5′-(2-methoxycarbonylethyl)-2′-hydroxyphenyl]-2H-benzotriazolewith polyethylene glycol 300;

where R=3′-tert-butyl-4′-hydroxy-5′-2H-benzotriazol-2-ylphenyl,2-[2′-hydroxy-3′-(α,α-dimethylbenzyl)-5′-(1,1,3,3-tetramethylbutyl)-phenyl]-benzotriazole;2-[2′-hydroxy-3′-(1,1,3,3-tetramethylbutyl)-5′-(α,α-dimethylbenzyl)-phenyl]benzotriazole.

2.2. 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy,4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2′,4′-trihydroxyand 2′-hydroxy-4,4′-dimethoxy derivatives.

2.3. Esters of substituted and unsubstituted benzoic acids, for example4-tert-butyl-phenyl salicylate, phenyl salicylate, octylphenylsalicylate, dibenzoyl resorcinol, bis(4-tert-butylbenzoyl)resorcinol,benzoyl resorcinol, 2,4-di-tert-butylphenyl3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl3,5-di-tert-butyl-4-hydroxybenzoate.

2.4. Acrylates, for example ethyl α-cyano-β,β-diphenylacrylate, isooctylα-cyano-β,β-diphenylacrylate, methyl α-carbomethoxycinnamate, methylα-cyano-β-methyl-p-methoxy-cinnamate, butylα-cyano-β-methyl-p-methoxy-cinnamate, methylα-carbomethoxy-p-methoxy-cinnamate,N-(β-carbomethoxy-β-cyanovinyl)-2-methylindoline, neopentyltetra(α-cyano-β,β-diphenylacrylate.

2.5. Nickel compounds, for example nickel complexes of2,2′-thio-bis[4-(1,1,3,3-tetramethylbutyl)phenol], such as the 1:1 or1:2 complex, with or without additional ligands such as n-butylamine,triethanolamine or N-cyclohexyldiethanolamine, nickeldibutyldithiocarbamate, nickel salts of the monoalkyl esters, e.g. themethyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonicacid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methyl-phenylundecylketoxime, nickel complexes of1-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additionalligands.

2.6. Sterically hindered amines, for examplebis(2,2,6,6-tetramethyl-4-piperidyl)sebacate,bis(2,2,6,6-tetramethyl-4-piperidyl)succinate,bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate,bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl)sebacate,bis(1,2,2,6,6-pentamethyl-4-piperidyl)n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate, the condensate of1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinicacid, linear or cyclic condensates ofN,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and4-tert-octylamino-2,6-dichloro-1,3,5-triazine,tris(2,2,6,6-tetramethyl-4-piperidyl)nitrilotriacetate,tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate,1,1′-(1,2-ethanediyl)bis(3,3,5,5-tetramethylpiperazinone),4-benzoyl-2,2,6,6-tetramethylpiperidine,4-stearyloxy-2,2,6,6-tetramethylpiperidine,bis(1,2,2,6,6-pentamethylpiperidyl)-2-n-butyl-2-(2-hydroxy-3,5-di-tert-butylbenzyl)malonate,3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-dione,bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate,bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate, linear or cycliccondensates ofN,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and4-morpholino-2,6-dichloro-1,3,5-triazine, the condensate of2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triazineand 1,2-bis(3-aminopropylamino)ethane, the condensate of2-chloro-4,6-di-(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triazineand 1,2-bis(3-aminopropylamino)ethane,8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-dione,3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione,3-dodecyl-1-(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-dione, amixture of 4-hexadecyloxy- and4-stearyloxy-2,2,6,6-tetramethylpiperidine, a condensate ofN,N-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and4-cyclohexylamino-2,6-dichloro-1,3,5-triazine, a condensate of1,2-bis(3-aminopropylamino)ethane and 2,4,6-trichloro-1,3,5-triazine aswell as 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No.[136504-96-6]); a condensate of 1,6-hexanediamine and2,4,6-trichloro-1,3,5-triazine as well as N,N-dibutylamine and4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No. [192268-64-7]);N-(2,2,6,6-tetramethyl-4-piperidyl)-n-dodecylsuccinimide,N-(1,2,2,6,6-pentamethyl-4-piperidyl)-n-dodecylsuccinimide,2-undecyl-7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxo-spiro[4,5]decane, areaction product of7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro-[4,5]decaneand epichlorohydrin,1,1-bis(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)-2-(4-methoxyphenyl)ethene,N,N′-bis-formyl-N,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine,a diester of 4-methoxymethylenemalonic acid with1,2,2,6,6-pentamethyl-4-hydroxypiperidine,poly[methylpropyl-3-oxy-4-(2,2,6,6-tetramethyl-4-piperidyl)]siloxane, areaction product of maleic acid anhydride-α-olefin copolymer with2,2,6,6-tetramethyl-4-aminopiperidine or1,2,2,6,6-pentamethyl-4-aminopiperidine,2,4-bis[N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidine-4-yl)-N-butylamino]-6-(2-hydroxyethyl)amino-1,3,5-triazine,1-(2-hydrooxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine,5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, Sanduvor(RTM, Clariant; CAS Reg. No. 106917-31-1],5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, thereaction product of2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidine-4-yl)butylamino]-6-chloro-s-triazinewith N,N′-bis(3-aminopropyl)ethylenediamine),1,3,5-tris(N-cyclohexyl-N-(2,2,6,6-tetramethylpiperazine-3-one-4-yl)amino)-s-triazine,1,3,5-tris(N-cyclohexyl-N-(1,2,2,6,6-pentamethylpiperazine-3-one-4-yl)amino)-s-triazine.

2.7. Oxamides, for example 4, 4′-dioctyloxyoxanilide,2,2′-diethoxyoxanilide, 2,2′-dioctyloxy-5,5′-di-tert-butoxanilide,2,2′-didodecyloxy-5,5′-di-tert-butoxanilide, 2-ethoxy-2′-ethyloxanilide,N,N′-bis(3-dimethylaminopropyl)oxamide,2-ethoxy-5-tert-butyl-2′-ethoxanilide and its mixture with2-ethoxy-2′-ethyl-5,4′-di-tert-butoxanilide, mixtures of o- andp-methoxy-disubstituted oxanilides and mixtures of o- andp-ethoxy-disubstituted oxanilides.

2.8. 2-(2-Hydroxyphenyl-1)-1,3,5-triazines, for example2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine,2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-triazine,2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine,2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine,2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropyloxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine,2-[4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2-(2-hydroxy-4-hexyloxy)phenyl-4,6-diphenyl-1,3,5-triazine,2-(2-hydrooxy-4-methoxyphenyl)-4,6-diphenyl-1,3,5-triazine,2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]-1,3,5-triazine,2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-triazine,2-{2-hydroxy-4-[3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy]phenyl}-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,2,4-bis(4-[2-ethylhexyloxy]-2-hydroxyphenyl)-6-(4-methoxyphenyl)-1,3,5-triazine.

3. Metal deactivators, for example N,N′-diphenyloxamide,N-salicylal-N′-salicyloyl hydrazine, N,N′-bis(salicyloyl)hydrazine,N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyphydrazine,3-salicyloylamino-1,2,4-triazole, bis(benzylidene)oxalyl dihydrazide,oxanilide, isophthaloyl dihydrazide, sebacoyl bisphenylhydrazide,N,N′-diacetyladipoyl dihydrazide, N,N′-bis(salicyloyl)oxalyldihydrazide, N,N′-bis(salicyloyl)thiopropionyl dihydrazide.

4. Phosphites and phosphonites, for example triphenyl phosphite,diphenylalkyl phosphites, phenyldialkyl phosphites, tris(nonylphenyl)phosphite, trilauryl phosphite, trioctadecyl phosphite,distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite, diisodecyl pentaerythritol diphosphite,bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite,bis(2,4-dicumylphenyl)pentaerythritol diphosphite,bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite,diisodecyloxypentaerythritol diphosphite,bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite,bis(2,4,6-tris(tert-butylphenyl)pentaerythritol diphosphite, tristearylsorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl)4,4′-biphenylene diphosphonite,6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1,3,2-dioxaphosphocin,bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite,bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite,6-fluoro-2,4,8,10-tetra-tert-butyl-[2-methyl-dibenz[d,g]-1,3,2-dioxaphosphocin,2,2′,2″-nitrilo-[triethyltris(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite],2-ethylhexyl(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite,5-butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1,3,2-dioxaphosphirane.

The following phosphites are especially preferred:

Tris(2,4-di-tert-butylphenyl) phosphite (Irgafos 168 (RTM, Ciba Inc.),tris(nonylphenyl) phosphite,

5. Hydroxylamines, for example N,N-dibenzylhydroxylamine,N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine,N,N-dilaurylhydroxylamine, N,N-ditetradecylhydroxylamine,N,N-dihexadecylhydroxylamine, N,N-dioctadecylhydroxylamine,N-hexadecyl-N-octadecylhydroxyylamine,N-heptadecyl-N-octadecylhydroxylamine, N,N-dialkylhydroxylamine derivedfrom hydrogenated tallow amine.

6. Nitrones, for example, N-benzyl-α-phenylnitrone,N-ethyl-α-methylnitrone, N-octyl-α-heptylnitrone,N-lauryl-α-undecylnitrone, N-tetradecyl-α-tridecylnnitrone,N-hexadecyl-α-pentadecylnitrone, N-octadecyl-α-heptadecylnitrone,N-hexadecyl-α-heptadecylnitrone, N-octadecyl-α-pentadecylnitrone,N-heptadecyl-α-heptadecylnitrone, N-octadecyl-α-hexadecylnitrone,nitrone derived from N,N-dialkylhydroxylamine derived from hydrogenatedtallow amine.

7. Thiosvnergists, for example dilauryl thiodipropionate, dimistrylthiodipropionate, distearyl thiodipropionate or distearyl disulfide.

8. Peroxide scavengers, for example esters of β-thiodipropionic acid,for example the lauryl, stearyl, myristyl or tridecyl esters,mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zincdibutyldithiocarbamate, di-octadecyl disulfide, pentaerythritoltetrakis-(β-dodecylmercapto)propionate.

9. Polyamide stabilizers, for example copper salts in combination withiodides and/or phosphorus compounds and salts of divalent manganese.

10. Basic co-stabilizers, for example melamine, polyvinylpyrrolidone,dicyandiamide, triallyl cyanurate, urea derivatives, hydrazinederivatives, amines, polyamides, polyurethanes, alkali metal salts andalkaline earth metal salts of higher fatty acids, for example calciumstearate, zinc stearate, magnesium behenate, magnesium stearate, sodiumricinoleate and potassium palmitate, antimony pyrocatecholate or zincpyrocatecholate.

11. Nucleating agents, for example inorganic substances, such as talcum,metal oxides, such as titanium dioxide or magnesium oxide, phosphates,carbonates or sulfates of, preferably, alkaline earth metals; organiccompounds, such as mono- or polycarboxylic acids and the salts thereof,e.g. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodiumsuccinate or sodium benzoate; polymeric compounds, such as ioniccopolymers (ionomers), or Irgaclear XT 386 (RTM, Ciba). Especiallypreferred are 1,3:2,4-bis(3′,4′-dimethylbenzylidene)sorbitol,1,3:2,4-di(paramethyldibenzylidene)sorbitol, and1,3:2,4-di(benzylidene)sorbitol.

12. Fillers and reinforcing agents, for example calcium carbonate,silicates, glass fibres, glass beads, asbestos, talc, kaolin, mica,barium sulfate, metal oxides and hydroxides, carbon black, graphite,wood flour and flours or fibers of other natural products, syntheticfibers.

13. Other additives, for example pigments, such as carbon black,titanium dioxide in its rutile or anatase forms, color pigments;plasticisers; lubricants; emulsifiers; rheology additives;antislip/antiblock additives; catalysts; flow-control agents; opticalbrighteners; antistatic agents and blowing agents.

14. Benzofuranones and indolinones, for example those disclosed in U.S.Pat. No. 4,325,863; U.S. Pat. No. 4,338,244; U.S. Pat. No. 5,175,312;U.S. Pat. No. 5,216,052; U.S. Pat. No. 5,252,643; DE-A-4316611;DE-A-4316622; DE-A-4316876; EP-A-0589839, EP-A-0591102; EP-A-1291384 or3-[4-(2-acetoxyethoxy)phenyl]-5,7-di-tert-butylbenzofuran-2-one,5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phenyl]benzofuran-2-one,3,3′-bis[5,7-di-tert-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one],5,7-di-tert-butyl-3-(4-ethoxyphenyl)benzofuran-2-one,3-(4-acetoxy-3,5-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,3-(3,5-dimethyl-4-pivaloyloxyphenyl)-5,7-di-tert-butylbenzofuran-2-one,3-(3,4-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,3-(2,3-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,3-(2-acetyl-5-isooctylphenyl)-5-isooctylbenzofuran-2-one.

15. Terpene derivatives, for example those disclosed in WO 2003/080011,those mentioned in the comprehensive list of Kirk-Othmer, Encyclopediaof Chemical Technology, John Wiley & Sons, 4^(th) edition (1994), Vol.23, p. 833-882.

16. Flame retardants

16.1 Phosphorus containing flame retardants, for example tetraphenylresorcinol diphosphite (Fyrolflex RDP, RTM, Akzo Nobel),tetrakis(hydroxymethyl)phosphonium sulphide, triphenyl phosphate,diethyl-N,N-bis(2-hydroxyethyl)-aminomethyl phosphonate, hydroxyalkylesters of phosphorus acids, ammonium polyphosphate (APP), resorcinoldiphosphate oligomer (RDP), phosphazene flame retardants orethylenediamine diphosphate (EDAP).

16.2 Nitrogen containing flame retardants, for example melamine-basedflame retardants, isocyanurates, polyisocyanurate, esters of isocyanuricacid, like tris-(2-hydroxyethyl)isocyanurate,tris(hydroxymethyl)isocyanurate, tris(3-hydroxy-n-propyl)isocyanurate,triglycidyl isocyanurate, melamine cyanurate, melamine borate, melaminephosphate, melamine pyrophosphate, melamine polyphosphate, melamineammonium polyphosphate, melamine ammonium pyrophosphate, dimelaminephosphate, dimelamine pyrophosphate, benzoguanamine, allantoin,glycoluril, urea cyanurate, a condensation product of melamine from theseries melem, melam, melon and/or a higher condensed compound or areaction product of melamine with phosphoric acid or a mixture thereof.

16.3 Organohalogen flame retardants, for example polybrominated diphenyloxide (DE-60F, Great Lakes), decabromodiphenyl oxide (DBDPO; Saytex 102E(RTM, Albemarle)), tris[3-bromo-2,2-bis(bromomethyl)propyl]phosphate (PB370, (RTM, FMC Corp.)), tris(2,3-dibromopropyl)phosphate,tris(2,3-dichloropropyl)phosphate, chlorendic acid, tetrachlorophthalicacid, tetrabromophthalic acid, poly-β-chloroethyl triphosphonatemixture, tetrabromobisphenol A-bis(2,3-dibromopropyl ether) (PE68),brominated epoxy resin, ethylene-bis(tetrabromophthalimide) (SaytexBT-93 (RTM, Albemarle)), bis(hexachlorocyclopentadieno) cyclooctane(Declorane Plus (RTM, Oxychem)), chlorinated paraffins,octabromodiphenyl ether, hexachlorocyclopentadiene derivatives,1,2-bis(tribromophenoxy)ethane (FF680), tetrabromobisphenol A (SaytexRB100 (RTM, Albemarle)), ethylene bis-(dibromonorbornanedicarboximide)(Saytex BN-451 (RTM, Albemarle)),bis-(hexachlorocycloentadeno)cyclooctane, PTFE, tris(2,3-dibromopropyl)isocyanurate or ethylene-bis-tetrabromophthalimide. The halogenatedflame retardants mentioned above are routinely combined with aninorganic oxide synergist.

16.4 Inorganic flame retardants, for example aluminium trihydroxide(Ath), boehmite (AlOOH), magnesium dihydroxide (MDH), zinc borates,CaCO₃, organically modified layered silicates, organically modifiedlayered double hydroxides, and mixtures thereof. In regard to thesynergistic combination with halogenated flame retardants, the mostcommon inorganic oxide synergists are zinc oxides, antimony oxides likeSb₂O₃ or Sb₂O₅ or boron compounds.

Preferred is a further additive selected from the group of antioxidants,UV absorbers, hindered amine light stabilizers, nickel compounds, metaldeactivators, phosphites and phosphonites, hydroxylamines,thiosynergists, nucleating agents, peroxide scavengers, fillers orreinforcing agents and terpene derivatives.

Especially preferred is a composition which comprises components a), b),a metal oxide and a phenolic antioxidant selected from the lists1.1-1.18 as provided above. An especially preferred metal oxide in sucha combination is zinc oxide.

Particularly preferred is a composition which comprises components a),b) and a phenolic antioxidant selected from the lists 1.1-1.18 asprovided above.

Very preferred phenolic antioxidants in these compositions are esters ofβ-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- orpolyhydric alcohols (i.e. list 1.13.). Especially preferred aretetrakis-[3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]-methaneand 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionic acid octadecylester.

Preferred is a composition which comprises components a), b), a phenolicantioxidant selected from the lists 1.1-1.18 as provided above, aphosphite stabilizer selected from the list 4 as provided above and abasic costabilizer selected from the list 10 as provided above.Especially preferred is the composition, wherein said basic costabilizeris calcium stearate.

Preferred is a further additive selected from the group of flameretardants comprising phosphorus containing flame retardants, nitrogencontaining flame retardants, halogenated flameretardants and inorganicflame retardants.

The optional further additive in the stabilized compositions of theinvention may be contained from 0.01% to 5%, preferably from 0.025% to2%, and especially from 0.1% to 1% by weight of the stabilizedcomposition.

In case of a flame retardant as optional further additive, the flameretardant is advantageously contained in the composition of theinvention in an amount from 0.5% to 60.0% by weight of the organicmaterial; for instance from 1.0% to 40.0%; for example from 5.0% to35.0% by weight of the organic material.

The component b) as well as an optional further additive of theinvention may readily be incorporated into the organic material ascomponent a) by conventional techniques, at any convenient stage priorto the manufacture of shaped articles therefrom.

The component b) as well as an optional further additive can judiciouslybe incorporated by one of the following methods:

-   -   as emulsion or dispersion (e.g. to latices or emulsion polymers)    -   as a dry mixture during the blending    -   by direct introduction into the processing apparatus (e.g.        extruders, internal mixers)    -   as solution in an organic solvent    -   as melt.

The organic material as component a) can be in the form of a solid,solution, suspension or emulsion.

Incorporation of the component b) as well as an optional furtheradditive is in case of thermoplastic polymers as component a) performedbest in a thermal compounding step. Thorough blending of the componenta), component b) as well as an optional further additive is followed byan extrusion of the physical blend at elevated temperature. Typically anextruder with suitable screw configuration is used for this step.

The additives can also be added to the polymer as component a) in theform of a masterbatch (‘concentrate’), which contains the component b)as well as an optional further additive incorporated in a furtherpolymer of the masterbatch. The concentration for the additives is, forexample, from 1% to 40%, in particular 2.5% to 25% by weight of themasterbatch. Said further masterbatch polymer must not be necessarily ofidentical structure than the polymer as component a). The masterbatchpolymer can be produced in a different manner to that of the polymer ascomponent a). The masterbatch can be in the form of a powder, granules,solutions, suspensions or in the form of latices.

In case of a polymer as component a), the polymer compositions of thisinvention can be employed in various forms and/or processed to givevarious final products, for example as to obtain films, fibres, tapes,moulding compositions, profiles or as binders for coating materials,adhesives or putties.

In more detail, the final product respectively article can be any typeof polymeric article, which needs stabilization in natural sunlightand/or humidity at low, ambient or elevated temperature. For example,the polymer component may be used to manufacture polymeric films,sheets, bags, bottles, styrofoam cups, plates, utensils, blisterpackages, boxes, package wrappings, plastic fibers, tapes, agriculturalarticles such as twine agricultural films, mulch films, small tunnelfilms, banana bags, direct covers, nonwoven, pots for agricultural use,goetextiles, landfill covers, industrial covers, waste covers, temporaryscaffolding sheets, building films, silt fences, poultry curtains, filmsfor building temporary shelter constructions, disposable diapers,disposable garments or the like.

The polymeric articles may be manufactured by any process available tothose of ordinary skill in the art including, but not limited to,extrusion, extrusion blowing, film casting, film blowing, calendering,injection molding, blow molding, compression molding, thermoforming,spinning, blow extrusion or rotational casting.

For the production of the desired polymeric article out of the polymercompositions of this invention, any appropriate equipment can be used,depending on the final form of the article, for example a blow extruderin the case of films, an extrusion machine in the case of sheets or aninjection molding machine.

A further embodiment of this invention is a method for stabilization ofan organic material susceptible to oxidative, thermal or light-induceddegradation, which comprises the incorporation therein or applyingthereto a compound of formula I or formula II. Preferred is also the useof a compound of formula I or formula II for stabilization of an organicmaterial susceptible to oxidative, thermal or light-induced degradation.

A further embodiment of this invention is a method for improving flameretardancy of an organic material, which comprises the incorporationtherein or applying thereto a compound of formula I or formula II.

Preferred is also the use of a compound of formula I or formula II forimproving the flame retardancy of an organic material.

All definitions and preferences stated above apply equally for allembodiments of this invention.

Another aspect of this invention is the intermediateN-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-N′,N′-bis-[2-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-ylamino)-ethyl]-ethane-1,2-diamine.

The compounds of formula I or formula II can be prepared according toknown methods. Some of the methods are exemplified in the syntheticexample. Furthermore, the referred literature therein provides furthersynthetic approaches.

SYNTHETIC EXAMPLES

All chemicals are used as received and not purified prior to synthesis.All reactions are carried out under nitrogen atmosphere except whenotherwise stated.

Example 1N,N′-Bis-(2,2,6,6-tetramethyl-piperidin-4-yl)-N,N′-bis-{2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl}-hexane-1,6-diamine(I-101)

a) Compound I-101 is disclosed in ‘Rearrangement of the polymerstructure in the presence of high molecular weight additives’, A. P.Marin, V. Borzatta, L. Greci, Journal of Macromolecular Science, Pureand Applied Chemistry, 1998, A35(7&8), pages 1299-1311.

b) A four-necked round-bottom flask equipped with a mechanical stirrer,thermocouple, dropping funnel and condenser is charged with 100.0 g(0.542 mol) of cyanuric chloride suspended in 300 mL of toluene and 70 gof NaOH_(aq) (30%; 1.75 mol). To this suspension by means of a droppingfunnel is added 233 g (1.10 mol) of N-butyl triacetonediamine dissolvedin 50 mL of toluene. The mixture was heated under stirring at 70° C. forone hour then cooled down to room temperature.

71.4 g (0.181 mol) ofN,N′-bis-(2,2,6,6-tetramethylpiperidin-4-yl)-hexane-1,6-diamine in 50 mLof toluene is added to the reaction mixture over 30 minutes. Then, thereaction is refluxed overnight and finally cooled down to roomtemperature. The organic phase is washed with 300 mL of H₂O, dried overNa₂SO₄ and concentrated under vacuum. The crude brown-yellow residue isanalyzed by ¹H-NMR to reveal that the major part of the chloride atomsof the original cyanuric chloride unit have reacted to result incompound I-101. The residue is purified by dissolving in 350 mL ofrefluxing acetone and afterwards precipitation in the refrigerator at−20° C. overnight.

Yield: 260 g (69%)

TGA (10° C./min): 260° C.: −0.06%; 280° C.: −0.09%; 300° C.: −0.18%

Melting point: 188-190° C.

Elemental analysis: calculated C, 70.64% H, 11.28% N, 18.08%.

found C, 70.21% H, 11.21% N, 17.99%.

Example 2N,N′-Bis-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-N,N′-bis-{2,4-bis-{n-butyl(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl}-hexane-1,6-diamine(P-201)

In a 1.0 L autoclave equipped with a mechanical stirrer are added 100 g(0.0717 mol) of compound I-101, 91.4 g (0.755 mol) of allyl bromide and104.1 g (0.754 mol) of K₂CO₃, suspended in 500 mL of toluene. Themixture is heated at 160° C. overnight, cooled down and washed with 300mL of H₂O at 50° C. Toluene is removed under reduce pressure to give ayellow solid. This solid is placed in a four-necked round-bottom flaskequipped with a mechanical stirrer, thermocouple and a dropping funnel.500 mL of CH₂Cl₂ and 110 g (0.797 mol) of K₂CO₃ are also charged in theflask. The solution is cooled down to 0° C. and 90 g of peracetic acid(35%; 0.414 mol) is slowly added over 30 minutes. Afterwards, themixture is warmed up and stirred at room temperature for one day. 1.0 Lof H₂O is added. The organic phase is separated, dried over Na₂SO₄ andfiltered. The solvent is removed to give a brown material which wasloaded in a 1.0 L autoclave without further purification. 600 mL oftoluene and 6.0 g of Pd/C (5%) are also loaded in the autoclave and theoverall mixture is heated at 70° C. for 4 hours.

The solution is cooled to room temperature, filtered to remove thecatalyst and dried under reduced pressure. The residue is dissolved in15 mL of CH₂Cl₂ and then precipitated with cold methanol to givecompound P-201 as white-yellow powder.

Yield: 117 g (94%)

TGA (10° C./min): 210° C.: −0.65%; 260° C.: −1.15%; 300° C.: −4.95%

Melting point: 139-143° C.

Elemental analysis: calculated C, 68.92% H, 11.10% N, 14.47%

found C, 68.40% H, 10.91% N, 14.18%.

Example 3 n-Butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amine(I-102)

The synthesis of compound I-102 is performed starting from1-propyloxy-2,2,6,6-tetramethyl-piperidin-4-one according to theprocedure described in patent WO 2008/003605 A1, page 19, line 8.

Example 4N,N′-Dibutyl-6-chloro-N,N′-bis-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-[1,3,5]triazine-2,4-diamine(I-103)

a) The synthesis of compound I-103 is provided as example 8 in U.S. Pat.No. 6,117,995, column 51, line 1.

b) A four-necked round-bottom flask equipped with a mechanical stirrer,thermocouple, dropping funnel and condenser is charged with 27.3 g(0.148 mol) of cyanuric chloride and 200 mL of xylene at 0-5° C. 40 g(0.148 mol) of compound I-102 in 25 mL of xylene are slowly added over20 minutes to this solution. After 90 minutes, further 40 g (0.148 mol)of compound I-102 in 25 mL of xylene and 25 mL of water are slowly addedover 20 minutes to the system allowing the temperature to reach 45° C.

The mixture is kept at 45° C. for 30 minutes. Then, 13.0 g of NaOH_(aq)(30%, 0.325 mol) are slowly added over 30 minutes. The temperature isthen rose to 80° C. and the reaction is heated for 2 hours at 80° C.After being cooled to room temperature, the organic phase is washed with300 mL of water, separated and dried over Na₂SO₄. The solvent is removedin vacuo to obtain compound I-103 as a yellowish liquid, whichsolidifies in the refrigerator at a temperature around 4° C.

Yield: 75.4 g (78%)

TGA (10° C./min): 260° C.: −4.58%; 280° C.: −9.59%; 300° C.: −26.04%

Elemental analysis: calculated C, 64.44% H, 10.20% N, 15.03%

found C, 65.01% H, 10.11% N, 15.03%.

LC/MS: [M]⁺: 652.93

Example 5N,N-Bis-(2-{(2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)amino}-[1,3,5]triazin-6-yl)-amino}-ethyl)-N′-(2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl)-ethane-1,2-diamine(P-202)

In a 1.0 L autoclave equipped with a mechanical stirrer are loaded 50 g(0.0766 mol) of compound I-103, 3.83 g (0.0262 mol) oftris(2-aminoethyl)amine and 6.5 g of NaOH_(aq) (30%; 0.163 mol) in 500mL of xylene. The mixture is heated at 160° C. for 16 hours, then cooleddown and washed with 300 mL of H₂O at 40° C. The organic phase isseparated and dried over Na₂SO₄. Evaporation of the solvent in vacuoresults in a brown solid, which is purified by dissolving in 30 mL ofrefluxing methanol and precipitation in the refrigerator at −20° C.overnight. Compound P-202 is obtained as white powder.

Yield: 21.4 g (41%)

TGA (10° C./min): 160° C.: −0.12%; 260° C.: −1.19%; 300° C.: −9.57%

Melting point: 75-77° C.

ESI-MS (m/z) in THF/CH₃CN: [M]⁺: 1993.7, [M]²⁺: 997.9 (MW calculated:1994.1 g/mol)

Example 6N-(2,2,6,6-Tetramethyl-1-propoxy-piperidin-4-yl)-N′,N′-bis-[2-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-ylamino)-ethyl]ethane-1,2-diamine(I-104)

A four-necked round-bottom flask equipped with a mechanical stirrer,thermocouple, dropping funnel and condenser is charged with 30.0 g(0.141 mol) of 2,2,6,6-tetramethyl-1-propoxy-piperidin-4-one, 7.7 g(0.0526 mol) of tris-(2-aminoethyl)-amine and 350 mL of cyclohexane. Thesolution is heated at reflux for 3 hours and water removed. Then it iscooled to room temperature and 120 mL of MeOH are added at 15° C.

4.0 g (0.106 mol) of NaBH₄ is slowly added at 15° C. The solution isfinally warmed up and stirred at room temperature overnight.

It is washed twice with 200 mL of H₂O and 200 mL of CH₂Cl₂. The solventis removed under reduced pressure to give a yellow-orange solid. Thissolid is purified by sonication for 15 minutes in 120 mL of acetone togive compound I-104 as a white precipitate.

Yield: 24.5 g (63%)

TGA (10° C./min): 210° C.: −0.15%; 260° C.: −3.83%

Melting point: 126-129° C.

Elemental analysis: calculated C, 68.34% H, 11.88% N, 13.28%

-   -   found: C, 67.59% H, 11.62% N, 13.08%

ESI-MS (m/z) in THF/CH₃CN: [M]⁺: 738.9 (MW calculated: 738.2 g/mol)

Example 7N,N-Bis-(2-{(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-(2,4-bis-{n-butyl(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl)-amino}-ethyl)-N′-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-N′-(2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl)-ethane-1,2-diamine(P-203)

In a 1.0 L autoclave equipped with a mechanical stirrer are added 20.0 g(0.0271 mol) of compound I-104, 53.5 g (0.082 mol) of compound I-103 and5.44 g of NaOH_(aq) (30%; 0.136 mol) in 400 mL of xylene. The mixture isheated at 160° C. for 20 hours. The solution is cooled down and washedtwice with 300 mL of H₂O at 50° C. Xylene is removed under reducedpressure to give a brown solid. This solid is dissolved in 10 mL ofCH₂Cl₂ and purified by precipitation with 250 mL of cold MeOH to givecompound P-203 as a white-yellow powder.

Yield: 30.8 g (44%)

TGA (10° C./min): 210° C.: −0.07%; 260° C.: −2.96%

Melting point: 157-161° C.

ESI-MS (m/z) in CH₂Cl₂/MeOH: [M+MeOH]⁺: 2619.2 (Mw calculated: 2618.1g/mol)

Elemental analysis: calculated C, 68.28% H, 10.99% N, 15.17%

found C, 68.19% H, 11.05% N, 15.21%.

Example 8N,N′-Bis-(3-{(2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)amino}-[1,3,5]triazin-6-yl)-amino}-propyl)-bis-N,N′-(2,4-bis-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl)-ethane-1,2-diamine(C-301)

a) Compound C-301 is mentioned in U.S. Pat. No. 6,117,995 (column 20,line 25).

b) A four-necked round-bottom flask equipped with a mechanical stirrer,thermocouple, dropping funnel and condenser is charged with 88.5 g(0.136 mol) of compound I-103, 5.89 g (0.0338 mol) ofN,N′-bis-(3-aminopropyl)-ethane-1,2-diamine and 12 g of NaOH_(aq) (30%;0.30 mol) in 300 mL of xylene. The mixture is heated at 160° C. for 24hours, then cooled down and washed with water several times till pH=7-8.

The organic phase is separated, dried over Na₂SO₄ and the solventremoved under reduced pressure. The obtained brown-red solid isdissolved in 30 mL of CH₂Cl₂ and precipitated from 400 mL of cold MeOHto give compound C-301 as a white powder.

Yield: 28 g (31%)

TGA (10° C./min): 220° C.: −0.05%; 290° C.: −4.12%

Melting point: 102-106° C.

Maldi-Tof (m/z; α-cyano-4-hydroxycinnamic acid as matrix): [M+H]⁺: 2640(MW calculated: 2638.1 g/mol)

Elemental analysis: calculated C, 67.38% H, 10.77% N, 16.99%

found C, 67.54% H, 10.91% N, 16.98%.

Example 9N,N′-Bis-(2,2,6,6-tetramethyl-1-methoxy-piperidin-4-yl)-N,N′-bis-{2,4-bis-{n-butyl(2,2,6,6-tetramethyl-1-methoxy-piperidin-4-yl)-amino}-[1,3,5]triazin-6-yl}-hexane-1,6-diamine(P-204)

A 1 L reactor is charged with 150 g (0.107 mol) of compound I-101 in 275g toluene. There are added 0.8 g (0.0024 mol) sodium tungstatedihydrate, 0.6 g (0.010 mol) acetic acid, 6.3 g (0.350 mol) water and1.3 g benzyltrimethylammonium chloride (0.0069 mol). The reaction massis heated to 58° C. and 213 g hydrogen peroxide (50% w/w; 3.13 mol) isadded within 3 h. The reaction is stirred over night at roomtemperature. The reaction mass is washed with sodium carbonate solutionand then with water. The obtained dark red solution is transferred to a1.5 L reactor and 105 g toluene, 54 g water, 125 g acetic acid, 1.9 g(0.019 mol) CuCl and 120 g (2.71 mol) acetaldehyde are added. Thereaction mass is heated to 40° C. and 145 g hydrogen peroxide (50% w/w;2.13 mol) is added within 4 h followed by stirring over night. Then 0.98g (0.0099 mol) CuCl and 60 g (1.36 mol) acetaldehyde are added. 72 ghydrogen peroxide (50% w/w; 1.07 mol) is dosed over 2 h and the reactionis stirred for 2.5 h at 40° C. Work-up: The phases are separated, thewater phase is discarded. 60 g toluene is added to the organic phase andthen the organic phase is washed with a solution of Na₂CO₃ and EDTA inwater, with a solution of Na₂CO₃, Na₂SO₃ and EDTA in water and withNa₂SO₃ in water till no peroxides are detectable. The reaction mass iswashed with sodium hydrogencarbonate solution (5% w/w) and the solventis distilled off. The product is dried at 40-80° C. under vacuum to givecompound P-204 as white to off-white powder.

Yield: 95 g

¹H NMR (CDCl₃, 400 MHz, δ (ppm)): 5.4-5.0 (m); 3.67 (m); 3.29 (m);1.9-0.8 (m)

MS (Atmospheric Pressure Chemical Ionization, m/z): 1574.1 [M+1],1544.2, 1514.2, 1484.3

TGA (10° C./min): 210° C.: −1.68%; 260° C.: −3.31%; 300° C.:-5.99%

Melting point: 134-137° C.

Application Examples Example 10 Light Stabilization of Low-DensityPolyethylene Films

LDPE Film Manufacture:

In a turbo mixer (Caccia, Labo 10), the additives according to table 1are mixed with LDPE (i.e. low density polyethylene). The mixture isextruded at a maximum temperature of 200° C. using an O.M.C. twin-screwextruder (model EBV 19/25, with a 19 mm screw diameter and 1:25 ratio)to granules. The granules are subsequently mixed and diluted with thesame LDPE in order to obtain the calculated final concentration forpreparing a 150 μm thick film, using a blow-extruder (Dolci) working ata maximum temperature of 210° C. The calculated final concentrations inthe LDPE films are indicated in Table 1.

TABLE 1 Concentration of additives employed for the LDPE film Film No.Additives Film 1^(a)) 0.4% compound P-201 0.1% Irganox 1010^(c)) Film2^(a)) 0.4% compound P-202 0.1% Irganox 1010^(c)) Film 3^(a)) 0.4%compound P-203 0.1% Irganox 1010^(c)) Film 4^(b)) 0.4% compound C-3010.1% Irganox 1010^(c)) Film 5^(b)) 0.4% Tinuvin NOR 371^(d)) 0.1%Irganox 1010^(c)) Film 6^(b)) 0.4% Chimassorb 2020^(e)) 0.1% Irganox1010^(c)) ^(a))according to the invention ^(b))comparative ^(c))Irganox1010 (RTM, Ciba) istetrakis-[3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]-methane

^(d))Tinuvin NOR 371 (RTM, Ciba) is a mixture of oligomeric compoundswhich are the formal condensation products ofN,N′-bis-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-hexane-1,6-diamineand2,4-dichloro-6-{n-butyl-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-amino}-[1,3,5]triazineend-capped with 2-chloro-4,6-bis-(di-n-butylamino)-[1,3,5]triazine

^(e))Chimassorb 2020 (RTM, Ciba) is a mixture of oligomeric compoundswhich are the formal condensation products ofN,N′-bis-(2,2,6,6-tetramethyl-piperidin-4-yl)-hexane-1,6-diamine and2,4-dichloro-6-{n-butyl-(2,2,6,6-tetramethyl-piperidin-4-yl)-amino}-[1,3,5]triazineend-capped with 2-chloro-4,6-bis-(di-n-butylamino)-[1,3,5]triazine

Performances of Additives as Stabilizers in LDPE Films:

Light exposure: LDPE films are exposed in an ATLAS Weatherometer (modelCi65A) equipped with a 6500 W Xenon lamp (0.35 W/m²; continuous lightcycle, black panel temperature=63° C.).

Vapam treatment: LDPE films are placed in a close chamber and exposed tothe vapors of a 0.74 v/v aqueous solution of vapam (39.1% by weightsodium N-methyl-dithiocarbamate in water). The system is kept at 30° C.for 20 days. Then the LDPE films are subjected to light exposure asdescribed above.

Evaluation Parameters:

-   -   1) Carbonyl increment: Evaluation of the carbonyl band increment        (1710 cm-1) in LDPE films under applicative tests to assess the        performances as light/heat stabilizers. A higher increment value        indicates a higher degree of oxidative degradation.    -   2) Tensile elongation at break: Evaluation of elongation        percentage property of LDPE films under applicative tests to        assess the performances as light/heat stabilizers. Test carried        out with ZWICK Z1.0 testing machine with a speed of 100 mm/min;        a holder distance of 30 mm and at a temperature of 20° C.        -   A value, which is closer to the starting value for tensile            elongation at break, indicates less degradation.

TABLE 2 Carbonyl increment of 150 μm additivated LDPE films upon WOMexposure Time of exposure (hours) Film No. 0 750 1300 2635 3220 5080Film 1^(a)) 0.000 0.005 0.007 0.019 0.024 0.046 Film 2^(a)) 0.000 0.0000.000 0.002 0.005 0.011 Film 5^(b)) 0.000 0.006 0.010 0.023 0.030 0.052Film 6^(b)) 0.000 0.003 0.006 0.035 0.043 0.066 Footnotes are listed attable 1.

TABLE 3 Tensile measurements of 150 μm additivated LDPE films upon WOMexposure Time of exposure (hours) Film No. 0 1635 2580 3270 3996 Film1^(a)) 100 99 96 86 86 Film 2^(a)) 100 100   98* not measured  92** Film4^(b)) 100 not measured 99 78 70 Film 5^(b)) 100 99 94 88 80 Film 6^(b))100 89 78 74 70 Footnotes are listed at table 1. *after 2492 hours**after 5000 hours

TABLE 4 Carbonyl increment of 150 μm additivated LDPE films uponvapam-WOM exposure Time of exposure (hours) Film No. 0 550 1770 25654484 Film 1^(a)) 0.000 0.018 0.034 0.043 0.064 Film 2^(a)) 0.000 0.0110.023 0.028 not measured Film 5^(b)) 0.000 0.013 0.038 0.054 0.073 Film6^(b)) 0.000 0.021 0.045 0.063 0.131 Footnotes are listed at table 1.

TABLE 5 Tensile measurements of 150 μm additivated LDPE films uponvapam-WOM exposure Time of exposure (hours) Film No. 0 620 1245 22754200 Film 1^(a)) 100 100 97 95 92 Film 2^(a)) 100 100 not measured 97 90Film 4^(b)) 100 98 not measured 88 85 Film 5^(b)) 100 100 100  94 87Film 6^(b)) 100 95 92 76 65 Footnotes are listed at table 1.

Example 11 Flame Retardancy of Polypropylene Films

PP Film Manufacture:

Unless stated otherwise, commercial polypropylene (Moplen HP 552 R,manufacturer: Basell) is processed on a co-rotating extruder typeBerstorff 32D (lab size twin screw extruder, 25 mm screw diameter, 9heating zones) at a maximum temperature Tmax of 230° C. with athroughput rate of about 12 kg/h for 120 rpm screw speed and theadditives indicated in Table 6. After cooling in a water bath thepolymer strand is granulated. Test specimens are prepared by cast filmextrusion (150 μm thickness) using a cast film equipment Tech-line CR72T coupled with an extruder Tech-line E 20 T from Collin. Thecalculated final concentrations in the PP films are indicated in Table6.

TABLE 6 Concentration of added additive in the PP film Film No. AdditiveFilm 7^(b)) without addition Film 8^(a)) 0.5% compound P-201 Film 9^(a))1.0% compound P-201 Film 10^(a)) 0.5% compound P-204 Film 11^(a)) 1.0%compound P-204 Footnotes are listed at table 1.Performances of Additives as Flame Retardants in PP Film:

DIN4102-B2: The test samples are investigated for flame retardancy inaccordance to a modified DIN 4102-B2 (edge ignition) test, wherein themodification is the length of 160 mm instead of 190 mm for the textspecimen, i.e. 160 mm height and 60 mm width as specimen dimensions.There are two basic results: not classified and B2.

UL94-VTM: The test samples are investigated for flame retardancyaccording to UL94-VTM. There are 4 basic results: not classified, VTM2,VTM1 and VTM0. VTM0 represents the best basic result.

TABLE 7 Flaming test on 150 μm PP cast films according to modified DIN4102-B2 (edge ignition) Burning Damaged length Burning drips DIN4102-B2Film No. time [sec] [mm] paper ignition^(f)) rating Film 7^(b)) 12 120yes not classified Film 8^(a)) 4.0 73 no B2 Film 9^(a)) 3.6 72 no B2Film 10^(a)) 2.4 69 no B2 Film 11^(a)) 4.0 60 no B2 Footnotes a) and b)are listed at table 1. ^(f))Rated ‘yes’, if the burning drips drippingfrom the ignited test specimen ignite paper placed underneath the testspecimen according to the DIN 4102-B2 test norm.

Low values for burning time and damaged length reflect increased flameretardancy.

TABLE 8 Flaming test on 150 μm PP cast films according to UL94-VTM Totalburning Burning drips UL94-VTM Film No. time [sec] cotton ignition^(g))rating Film 7^(b)) 19 5 (5) not classified Film 8^(a)) 9 3 (5) VTM2 Film9^(a)) 4 0 (5) VTM0 Film 10^(a)) 6 4 (5) VTM2 Film 11^(a)) 4 0 (5) VTM0Footnotes a) and b) are listed at table 1. ^(g))Number of tests (out offive tests) in which burning drips dripping from the ignited testspecimen ignite cotton placed underneath the test specimen according tothe UL94-VTM test norm.

Low values for total burning time and less burning drips igniting cottonreflect increased flame retardancy.

The invention claimed is:
 1. A compound of formula II

wherein

R₇ is a group of formula V

C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl; R₁₀ is a group offormula VI

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl; R₁₃is a group of formula VII

hydrogen, C₁-C₁₈ alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈cycloalkenyl, C₆-C₁₀ bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉aralkyl or C₇-C₂₀ aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl; R₈,R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each other C₁-C₁₈alkyl, C₃-C₁₈ alkenyl, C₃-C₁₂ cycloalkyl, C₅-C₈ cycloalkenyl, C₆-C₁₀bicycloalkyl, C₃-C₁₈ alkynyl, C₆-C₁₀ aryl, C₇-C₉ aralkyl or C₇-C₂₀aralkyl substituted by C₁-C₄ alkyl or C₆-C₁₀ aryl; Z₅, Z₆, Z₇, Z₈, Z₉,Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independently from each other C₁-C₁₈alkyloxy, C₃-C₁₈ alkenyloxy, C₃-C₁₂ cycloalkyloxy, C₅-C₈cycloalkenyloxy, C₆-C₁₀ bicycloalkyloxy, C₃-C₁₈ alkynyloxy, C₆-C₁₀aryloxy, C₇-C₉ aralkyloxy or C₇-C₂₀ aralkyloxy substituted by C₁-C₄alkyl or C₆-C₁₀ aryl; and X₂, X₃ and X₄ are each independently from eachother C₂-C₁₂ alkylene or C₃-C₁₂ alkylene substituted by hydroxyl.
 2. Acompound according to claim 1, wherein R₇ is a group of formula V,C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇ cycloalkenyl or benzyl; R₁₀ is agroup of formula VI, hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl, C₅-C₈cycloalkyl, C₅-C₇ cycloalkenyl or benzyl; R₁₃ is a group of formula VII,hydrogen, C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl, C₅-C₈ cycloalkyl, C₅-C₇cycloalkenyl or benzyl; R₈, R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are eachindependently from each other C₁-C₁₂ alkyl, C₃-C₁₂ alkenyl, C₅-C₈cycloalkyl, C₅-C₇ cycloalkenyl or benzyl; Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃,Z₁₄ and Z₁₅ are each independently from each other C₁-C₁₂ alkyloxy,C₃-C₁₂ alkenyloxy, C₅-C₈ cycloalkyloxy, C₅-C₇ cycloalkenyloxy,benzyloxy; and X₂, X₃ and X₄ are each independently from each otherC₂-C₆ alkylene.
 3. A compound according to claim 2, wherein R₈, R₉, R₁₁,R₁₂, R₁₄ and R₁₅ are each independently from each other C₁-C₁₂ alkyl. 4.A compound according to claim 3, wherein R₇ is a group of formula V, R₁₀is a group of formula V₁ and R₁₃ is a group of formula VII.
 5. Acompound according to claim 4, wherein Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄and Z₁₅ are independently from each other methyloxy, ethyloxy,propyloxy, octyloxy, undecyloxy, cyclohexyloxy or prop-2-enyloxy.
 6. Acompound according to claim 3, wherein R₇, R₁₀ and R₁₃ are eachindependently from each other C₅-C₈ cycloalkyl.
 7. A compound accordingto claim 3, wherein R₇ is a group of formula V; R₁₀ is a group offormula VI or hydrogen; R₁₃ is a group of formula VII or hydrogen; R₈,R₉, R₁₁, R₁₂, R₁₄ and R₁₅ are each independently from each other C₁-C₁₂alkyl; Z₅, Z₆, Z₇, Z₈, Z₉, Z₁₀, Z₁₃, Z₁₄ and Z₁₅ are each independentlyfrom each other C₁-C₁₂ alkyloxy, wherein in case of C₃-C₁₂ alkyloxy bothcarbon atoms in α- and β-position next to the oxygen are not branched;and X₂, X₃ and X₄ are each independently from each other C₂-C₆ alkylene.8. A compound according to claim 7, wherein X₂, X₃ and X₄ are ethylene.9. A composition comprising a) an organic material which is susceptibleto oxidative, thermal or light-induced degradation; and b) at least onecompound of the formula II according to claim
 1. 10. A compositionaccording to claim 9, wherein component b) is present in an amount offrom 0.001 to 10% based on the weight of component a).
 11. A compositionaccording to claim 10, which contains further additives.
 12. Acomposition according to claim 11, which contains a further additiveselected from the group consisting of antioxidants, UV absorbers,hindered amine light stabilizers, nickel compounds, metal deactivators,phosphites or phosphonites, hydroxylamines, thiosynergists, nucleatingagents, peroxide scavengers, fillers, reinforcing agents and terpenederivatives.
 13. A method for stabilization of an organic materialsusceptible to oxidative, thermal or light-induced degradation, whichmethod comprises incorporating therein or applying thereto a compound offormula II according to claim
 1. 14. A method for improving flameretardancy of an organic material, which method comprises incorporatingtherein or applying thereto a compound of formula II according toclaim
 1. 15. A compound according to claim 1 of formula II where R₇ is agroup of formula V, R₁₀ is a group of formula VI and R₁₃ is a group offormula VII.
 16. A compound according to claim 1 of formula P